221534456442250 has 64 divisors (see below), whose sum is σ = 501836977833984. Its totient is φ = 71486748960000.

The previous prime is 221534456442209. The next prime is 221534456442251. The reversal of 221534456442250 is 52244654435122.

It is a junction number, because it is equal to n+sod(n) for n = 221534456442194 and 221534456442203.

It is not an unprimeable number, because it can be changed into a prime (221534456442251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3723238426 + ... + 3723297925.

It is an arithmetic number, because the mean of its divisors is an integer number (7841202778656).

Almost surely, 2^{221534456442250} is an apocalyptic number.

221534456442250 is an abundant number, since it is smaller than the sum of its proper divisors (280302521391734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221534456442250 is a wasteful number, since it uses less digits than its factorization.

221534456442250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7446536392 (or 7446536382 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 49.

The spelling of 221534456442250 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred fifty-six million, four hundred forty-two thousand, two hundred fifty".